The Master Lock No. 17 Laminated Steel Padlock features a 2in (51mm) wide reinforced laminated steel lock body providing extra strength and a 1in (25mm) tall, 7/16in (11mm) diameter hardened boron alloy shackle for superior cut resistance. Dual locking levers provide extra pry resistance making it ideal for industrial applications and the non-rekeyable, 5-pin W15 cylinder helps prevent picking.